L kellner



lUJI

L. KELLNER,

DOUBLE THROW SNAP SWXTCH.

mwucmlon m50 MAR. 28, 1919.

1,354,761, Patented Ont. 5, 1920.

2 SHEETS-SHEET L I l l ATTORNLYI LOUIS KELLNER, OE NEW YORK, N. Y,

A DOUBLE-'mineur snanswircn.

Specification of Letters Patent.

Patented Oct. 5, 1920.

Application led March 28, 1919. Serial No. 285,805.

Be it known that. l. Louis. Kommun. a ritizen of the llnitetl States, und a resident oi the borough oi Manhattan, city, county, and State of New York', have ii'iventetl eertain new and useful Improvements in Douhle-1`h|.'ow Snupwitehes, of which the 'following is a specification.

This invention relates to electric switches and, while the drawings illustrate a doublethrow triple-pole switch, it will be olwious that the invention is equelly applicable to switches haring a single throw and to switchee having any desired number oi poles.

Une of the objects of the invention is to providey simple. durable, and e'ective meehanism for operating the terminal bridging means with n rapid or snap action both to make anal hre-.1k the eircuit.

A further important object of the invention is toV provide a. loublethrow awitrh having' a rorking terminal bridging brush formed ot' a plurality of resilient plates of conducting material adapted to make a tlrm and broad Contact with either of two sets of line terminals. g

Another object of the invention is to provide u switch having a rocking terminal bridging (levioe and menne embmlying Single motor spring and'switoh handler for rocking said Lieviee with a snap action to close either of two circuits or to break 'both circuits.

A 'further object of the invention is to provide a switch having terminal bridging means. motor meehanisln for shitting the bridging means with a snap action in opposite directions, means for automatically locking the bridging means in on and olim positions, a swinging;r switch lever, anni means rontrollerl by Suhl. lever for Stor ing power in the motor nieffhauisn'i and soir sequently releasing the hrflning means to permit the motor meehanism to soup the bridging means in a flirevtion eorrrsponeiing with the direction of movement of the levrr.

In the drawinge. Figure 1 is a vertical irnneverse seirtional view ol a. triplpole rlonhle-throw switch embodying the invero tion;

Fig. 2 n fragmentary vertical longitudinal sertional view on the linoV XTM-Tl ol Fig. 3;

Eig. 3 a fragmentary horizontal sevtion on the line lllwlll of Fig. 1.;

Fig. -l a detail side elevation of part of' tile operating; mechanism;

Fig. 5 a fragmentary longitudinal section on the line V-V of Fig. l., showing the parts iu neutml position;

Fig. 6 a view similar to Fig. 5 showing the parte. in position to close one of the circuits;

Fig. 7 a view similar to Fig. 5, n part of the mechanism being removed to more clearly show the locking mechanism;

Fig. 8 a. fragmenturv sertional view on the line. VIll--VIH of Fig. l; und Fig. 9 a vertical longitudinal section on the line TXWIX of Fig. l.

The rocking, rontaet brushes and the n'ieohanialn for operating the sume. are mounted in liraekets 1 and :2 bolted or otherwise scoured to one fare of a hase ll of Slate. porcelain or the like at opposite sides of' Suhl linee.. The thlree terniinal-ln'illging rontact brushes 4 are confined in a housing romprisingr the base late 3, Side walls or plates intermediate partitione` (l similar to platee and u top wall or plate T. The platee 5. (l and 7 and hase plate tl are rig idly ronnected together b v holte l() which pass through the top nml hase plates and extend ,rertically through apertures in the plates 5 and 6. i

The nietes '5, (i and T lare formed of suitable insulating material and in oonjunrtion with the hase plaie 3 form an ilimilatiiig kruising ilivirleil into three rompartments, one Vfor eat-h brush 4 and its two ossoriatecl paire of line terminals 8 and 9. One ter min-.1l n in fixed to the hase plate 3 adjacent one emi ol' euch compartment am! tlieirarsoriaierl terminals 8 are mounted on the untler side oi' the top plate i at the opposite ends-1 ol! the compartments. (lne terminal 9 is tixell to the hase plate in each rempartment at the opposite end thereof from the lower terminal S am! one termin-.il .l is lixell to the .nder aille of top plato i' in earh rompartlnliit at the opposite eml of 4the romparlnuvit from the upper terminal 4.

The brushes 4 are formell ol a plurality oi' leaves or 'platos of resilient ronilurting metal. the longest. leal' heine in the zniilille of theI ln'ush and the remainingl lomos ilorer1f-ln; f in length toward the toy aiul hot-- #om ot' the lirush. aS shown in Fine. l ami il. The hruwln-e extenzl through apertures in a roc-king lair 1l uml are liehl to sait: har hy euitaiilo holt;` or rivets l2. The inurlhos are said spring contact brushes 4 as described a limi and broad contact is insured between the brushes and the line terminalsoll both circuits, and that the latch bolts will lock the brushes with the ends of the leaves thcreotI pressed under tension on the terminals, the parts being so proportioned that the motor spring will rock the brushesl a sullicient distance to cause the ends` thereof to be deflected as indicated `in dotted lines in Fig. t) betere the power of the spring is exhausted. It will be obvious that the forward latch bolt will prevent reverse rotation of theibrush support and thus lock the brushes in engagement with the terminals while under compression.

if desired, plate 1S may be cut away at the lower portion oi' the opening 1'.) opposite the stops M- to form a segmental recess 4T terinlnating in. abutments or stop shoulders Lt8 adapted to be engaged by a stop lug 4U on disk 2U to limit the extent ot' rotation of the disk and insure engagement oi the latch bolts with the two end stops 24 even if the latch bolts should become somewhat sluggish in operation. A spring-pressed retarding plunger 5() may be held to plate 18 midway oi the segmental. recess t7 to engage the lug 1U on disk 2l) and thus retard the final movement of the from either on position. r1`he stop lug 49 recess 4J and plunger 5U are not essential however, and may be omitted.

'hat I claim i:

1. An electric switch comprising two sets ot oppositely arranged diagonally disposed line terminals wired 4for two circuits, a terminal bridging device having a neutrrl position and two oppositely inclined olf positions, a rocking support for said device, a single motor spring. n switch handle, means controlled by the switch handle for storing power in said spring to rock said support with a snap action in either direction, means for automatically locking said support against movement in either of its three positions, and means controlled by the switch handle for releasing said latching means at the conclusion of the power storing movement of the switch handle.

2. In an electric switch, the combination of terminal bridging means rotatable in opposite directions, fixed stops spaced apart, a pair of latches yrotatable with the bridging means adapted to engage opposite sides of each ol' said stops to lock the bridging means against rotation in either direction, a. switch handle, a motor spring, connections between i and the handle and bridging means for lstoring power in said spring to rotate the bridging means in either direction, and latch tripping means operableI by the. handle adapted to trip one ot' said latches aftc a power storing movement olI the handle in one direction and 'to trip the other of disk to neutral positionV said latches after a power storing movement of the handle in another direction.

:5. In an electric switch, the combination of terminal-bridging means rotatable in opposite directions, fixed stops spaced apart, al pair of latches rotatable with the bridging means adapted to engage opposite sides of each of said stops to lock the bridging means against rotation in either direction, a coiled motor spring having projecting ends, a rota-l table switch handle, arms rotatable with the handle and bridging means extending between the ends of said spring, and latch trippinv means rotatable with the handle adapte( to release either of said latches after a power storing movement of the handle.

4. ln an electric switch, the combination ol' diagonally disposed line terminals, roching terminal bridging means, an element rotatable in opposite directions operativelyl connected to rock the bridging means, spaced stops` a pair oi" latches carried by said elcment adapted to automatically engage opiosite sides of either of said stops to lock said element against movement in either dii'ecticn, a coiled motor spring having projecting ends, a pin carried by said element extending between the ends of the spring, a switch handle. a pin carried by the switch handle extending between the ends of the spring and means controlled by the handle for withdrawing either of said latches from engagement with a stop.

In an electric switch, the combination of diagonally disposed line terminals, rockiinr terminal bridging means, an element rotatable in opposite. directions operatively connected to rock the bridging means, spaced stops` a pair of latches carried by said ele.- inent adapted to automatically engage opposite sides of either of said stops to lock said element againstmovement in either direcA tion, a coiled motor spring having projecting ends, a pin carried by said element e.\'- tending between the ends of the spring, a switch handle., a pin carried by the switch handle extending between the. ends of'the spring, ai pair oit' releasing levers pivoted on the rotatable element and each connected at its inner end with one of said latches, and means controlled by the handle for rocking either of said levers about its pivot to re lease its connected hitch.

(i. ln'a switch, the combination of line terminals, terminal bridging means, a rolatable member connected to shift said bridging means, a plurality of stops. a pair of spring pressed hitch bolts carried by .said member adapted to engage opposite. sides ol' either iil.silid stops, a pair of levers eariied by lsaid member cach operatively connected to retract one of said bitch boltlsa motor spring having projecting ends, a pin carried b v said iiicmbei' extending between the. ends ol' the spring, a switch handle, a pin carried.

said levers` when the rection and to operate the other lever wh'n the handle is moved in the opposite direction.

T. A double-throw switch having.r two pairs of diagonally disposed fixed contacts, a conducting device adapted to connect the contacts of either pair and having an intermediate neutral position, rocking means supporting said conducting `device intermediate its ends. a rotatable disk fixed to said rocking means, three fixed stops spaced apart about the periphery of Said dlizik` a pair of reciprocable spring1 pressed latch bolts normally projecting beyond theperiphery of the disk and adapted to engage opposite sides of either of said stops to hold the disk against movement in either of its three positions. a pair of releasing levers fnlcrnmed on said disk and connected at their inner ends with the latch bolts.` a .switch handle. a trip plate shiftahle by said handle and havinpr two spaced projections each adapted to eng-agemne of said levers when the handle is moved, and means controlled b); said handle for rotating the disk in the direitiiln of movement of the handle when the handle is shifted sntiiciently to retract either of said latch bolts.

8. In a nuiltiple-throw electric switch. the combination of stationary contacts` contactbridging means` a rotatable member con nected to shift the bridging means in either direction. a pluraht)i of spaced stops. a pair of latch bolts carried by said member adapted to engage opposite sides of either of Said stops. a motor spring'. an operationr handle capable of rota r v movement in either diretl` tion. connections between said spring and the` handlel and rotatable member for storing power in the spring to rotate said member in the d irection of movement of the handle, an means operable b saidA handle for releasing one of said atch bolts when handle isrotated in one direction and for leasing the other bolty when the handle is rotated in the opposite direction.

rfn a multiple-throw electric switch, the combination ofi-stationary contacts, contact- 'ridging means. a rotatable member connect;` ed to rotate the brid ing means in either direction, a pluralit 0% spaced. sto s, a pair of latch bolts carrie by said mem er adapted to engage opposite sides of either stop, a releasing device for each bolt carried by Said member, a motor dle rotatable in either rection, connections between said spring and the handle and member for storingV power in the spring to rotate said member in the direction of movement of the handle, means rotatable with the handle for actuating one. of said bolt-releasing devices when the handle is opposite direction.

10. In a multiplehrow switch, the combination of stationaryv and movable contacts, a rotatable. element for rotating the movable contacts, a plurality of spaced stops, devices carried by said element adapted to engage opposite sides of either sto a releasing lever for each deige pivote 0n Said element. a motor sprin a rotatable operatin handle.- connections etween the spring and said handle and element for storing power in the spring during an initial movement of the handle in either direction, and spaced trip4 rotatable with the handle each of which is adapted to actuate one of said releasing: levers after a predetermined movement of the handle. n

In testimonywhereof I hereunto affix my signature.

LOUIS KELLNER.

spi-inf, an operating hanf; 1 

